2004-2007 Cadillac CTS-V General Discussion Discussion, where to get spark plugs in Cadillac CTS-V Series Forum - 2004 - 2007; OK i am looking at replacing my spark plugs and wires.i have 60000 mile on the car with original equipment
Stock AC Delco iridium plugs. Got them from Rockauto.com. Why do people run aftermarket plugs on cars without a blower? Is it leftover from the days where slapping an MSD coil on a car was "way better than that stock junk" and it just stuck?
It seems like lately many GM plugs are Denso iridiums. You can either get from GM/AC, or from Denso if you want something colder/hotter/etc. I believe Denso still has the smallest electrode in the industry, when you see it, it's pretty surprising how narrow the electrode is.